Clay-sieving machine.



A. H. OOWLES.

CLAY SIEVING MACHINE.

APPLICATION FILED MAR. 16. 1911.

Patented Oct. 8, 1912.

ATTORNEYS A. H. COWLES.

CLAY SIBVING MACHINE.

APPLICATION TILED 111111.16, 1911.

Patented Oct. 8, 1912.

v the line B B of Fig. 1;

vice arranged in ALFRED H. COWLES, 0F SEWABEN, NEW JERSEY.

cLAY-srnvmc MACHINE.

Application filed March 16, 1911. Serial No. 614,875.

Specification of Letters Patent.

Patented Oct. 8.191 2.

To all whom it may concern;

Be it known that I, ALFRED H. (Townes, a citizen of the United States,.and resident of Sewaren, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Clay-Sieving Machines, of which specification.

My invention relates to a new and improved apparatus for sieving clay and simiar plastic materials.

The object of my invention is to provide a device which shall remove from the clay the stones or other foreign substances, which are of such size and constitution that they would spoil the clay, or seriously interfere with the purpose for which the plastic material is intended.

To carry out my invention, I have combined with an ordinary anger or plug clay handling machine an apparatus which issimple and economical in construction, easily manipulated, and thoroughly efficient in its operation. I have, moreover, made the parts that are subject' to wear interchangeable, thereby assuring long life to said parts.

In the drawings attached to and forming a part of this application: Figure 1 is a vertical, long tudinal section through my apparatus; Fig. 2 shows a cross section on the'line A A of Fig. 1; Fig. 3 is a side elevation, partly in section, of my device attached to the auger part of an ordinary brick-making machine; Fig. 1 is a section on Fig. 5 shows the dea vertical position and operating by gravity. Fig. 6 is a section on the line C C of Fig.1, and Fig. 7 is a view showing the manner of supporting the blades or bars of Fig. 1.

Referring to the drawings: 1 is the frame of the sieve, made preferably of cast iron or steel, which is detachably fastened to the body 2 of a brick-making, or clay handling machine, my device taking the place occupied by the brick molding portion.

3 is a heavy valve piece pivoted at 1 to the body portion 1. In order to control the pressure necessary weight, 5, or spring 6.

7 are the front and back walls of the ap-. aratus across which are stretched, leaving intervals between, a series of thin metal blades or-ba-rs 8, resting in slots fashioned the following is a forward motion,

desired point the clay. separated from able receptacle,

blades having to cause the valve 3 to; open, there is attached thereto an adjustable with their forwardly in the uprights 9. These in turn are supported in the sides 7 for the purpose of increasing the stability, midway between the sides of the frame on the cross-bar 10, supported in the shoulders 11, of the frame 7 blades 8, these pieces sieved clay,

meeting it as it comes, with a through the sieve and directing it downward. The blades 8 extend the entire length of the base and are detachably held by a rod 12, on one side tothe frame, and on the other, by pins to bolts 13, which are adjusted by means of nuts 14. The blades or bars are held in place in a manner similar to that in which the blades of a hack saw are held.

I 15'are steel plates adapted to receive the wear and are detachably fastened'to the frame 7, by means of screws 16.

17 are removable pressed metal tips for protecting from wear'the parts 9.

18 is a conveyer belt for removing the undesir is foreign substances, which pass out, through the spout 1.9, into any desirfor example, a car 20.

21 is the hopper through which the raw clay is introduced into the clay handling portion 2, and 22 shows tlic screw of an auger machine actuated by the wheel 23, for:

forcing the clay into the sieving device.

24 is the scraping flange. 25 answers the same purpose at the top of the valvei 26 shows the slots in which the blades 8 rest.

The operation is as follows :-The blades 8 are about an eighth of an inch thick, and are about a quarter of an inch apart. The been inserted and brought to the clay is introduced the desired tension,

Previous to its introinto the hopper 21.

duction, the clay is preferably subjected to a rough sieving, by which foreign substances, say as large as a quarter of an inch in diameter or greater are removed. There must also be in the clay, oradded thereto, such an amount of water as will render it sufliciently plastic. started the clay, just as in the process of brick-making, is forced forward and into the sieving device. As it"reaehes here its own fluidity and the pressure on the mass of clay enterin the sieve forces it'down between the bla es, or bars, 8, the guides 9 directed tips assisting Besides supporting the 9 form guides for the When the/machine is of the frame and rest,

to the an inch apart, it is evident that all bodies,

of ith inch diameter, or larger, will remain above the blades and beseparated out from the ,clay. These bodies, stones for example,

clay and the succeeding stones forward againstkthe' downwardly inclined face of This inclined shape of the the valve 3. valve face, as ,well as-the inclined shape, of the top of the casing, assists inv forcing the clay downward between the blades. By

5, or the force of the spring 6, the time of opening of the valve under accumulating pressure and the discharge of the foreign substances from the sieve can-be predetermined and' arranged at will. The clay issuing from the sieve can be received upon Y and carried awayby the conveyer 18, while .the stones pass outfthrough the mouth '19 into any desired receptacle.

It is evident that the portions of the machine coming into contact with the clay and the foreign substances will wear out first,

and I have, as mentioned above, providedv for the renewal of the exposed parts.

The sides of the moving valve should be protected from clay wedging between them and the frame, by well-known means, such, for instance, as is'employed in types of clay machines where pistons move downward. -,press1ng clays under high pressure" and are then withdrawn for a new charge. Apliable flange 2st,- whichacts as'a scraper keeps the clay from adhering to the wallsand working into the joints.

eratingjon material containing only a few through the valve.

InIFigJfi, I have shown the device. ar-

ranged vertically, operating by gravity, without the necessity for any-forcing mechanism; The device is provided with a hop per-- through which the clay is introduced in a proper .condition of plasticity.

Having thus fully described and illustrated my invention, what I claim, is

Copies at this patent may be obtained for 1. A device fo'r separating clay from the foreign solid material contained v therein, consisting of. a frame, and comprising'a base formed of longitudinally extending, I laterally spaced bars, a top portion inclined In using the sievingv machine, if one is 6p} New York and State of New York forcing; the clay forward along the. bars,

and means for regulating the v v pressure under wh ch the valve .is to act. I

2'. In a clay-sieving device, a casing, a ba'jse composed of a series of longitudinally will collect on'the top of the blades and will I be gradually forced by the pressure urged extending, laterallyspaced screening blades, n combination with a ser es of transverse shaving knivesdisposed below the upperedge of said blades, adapted to direct the plastic material downward between the blades. 1

In a clay sievingdevice, a series of longitudinally. extending. laterally spaced screening blades,in combination with a.se

ries of transverse shearing knives said knives lying below. the upper edge of the screening blades and having their upper edges inclined forward -toward theentrance of the device;

4. In a clay- ,sieving device 'a series-of longitudinally extending laterally spaced screening blades, in combination with a series of transverse shearing knives having their upper ends inclined forw'ard'toward the entrance of the, device, the-inclined cutting surfaces being adapted to be removed 5. In a claysieving device, afmetal casing,-

a base comprising: a series of" detachable longitudinally extending and laterally spaced blades, transverse shearing knives cooperating with said blades and. disposed in a plane below the-upper edges of said blades, an automatic valve pivoted to the top. of the casing, in combination with-means adapted toforce the material under treat ment between the transverse shearing knives 6. A gravity operated sieving. device'for I I in combination with an automatic valve cont ling the pressure in the casing, and

means for regulating the pressure on said valve. Signed at New York city in the county of this 13th day of March A. -D. 1911.

Witnesses DAVID J. WALsH," ALBERT STETSON.

-ALFRED H-.-oo LEs.

and slide the coarser material along the screening blades.

five eents each, by addressing the ffcommissioner of Patents, I Washington, I). C. 1 

